ML18354A615

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Updated Response to IE Bulletin 87-03 Dated 11/15/1985, Entitled, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings
ML18354A615
Person / Time
Site: Palisades Entergy icon.png
Issue date: 01/15/1988
From: Buckman F
Consumers Power Co
To:
Office of Nuclear Reactor Regulation
References
IEB-87-003
Download: ML18354A615 (9)
v • d • e


Text

  • CONSUMERS POWER COMPANY Palisades Plant Docket 50-255 - License DPR-20 RESPONSE TO IE BULLETIN At the request of the Commission and pursuant to the Atomic Energy Act of 1954 and the Energy Reorganization Act of 1974, as amended, and the Commission's Rules and Regulations thereunder, Consumers Power Company submits our updated response to IE Bulletin 87-03 dated November 15, 1985, entitled, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings. Consumers Power Company's response is dated January 15, 1988.

CONSUMERS POWER COMPANY F W Buckman, Senior Vice President Energy Supply

  • Sworn and subscribed to before me this 15th day of January, 1988.

~)t&/t~J Elaine E Buehrer, Notary Public Jackson County My commission expires October 31, 1989

  • OC0188-0008-NL04

LIST OF TABLES TABLE 1 TABULATION OF MAXIMUM DIFFERENTIAL PRESSURES &

TARGET THRUST WINDOWS TABLE 2 RESULTS OF THE AS-FOUND TESTING OF THE 85-03 VALVES/OPERATORS TABLE 3 AS-LEFT CLOSING THRUST RESULTS TABLE 4 AS-LEFT OPENING THRUST RESULTS TABLE. 5 RESULTS OF DIFFERENTIAL PRESSURE TESTING

    • CLOSING ONLY **

TABLE 6 RESULTS OF DIFFERENTIAL PRESSURE TESTING

    • OPENING ONLY **
  • MI0687-2096D-MA05

TABLE 1 TABULATION OF MAXIMUM DIFFERENTIAL PRESSURES

& TARGET THRUST WINDOWS

  • VALVE MAXIMUM DELTA P CLOSE OPEN THRUST MAX CLOSE TARGET MIN THRUST MAX OPEN TARGET MIN 1===========1=========1==========1==========1==========1==========1========1 VOP-0743 1714 1714 11583 10530 N/A N/A VOP-0748 1354 1354 10332 9393 N/A N/A VOP-0753 1714 1714 11583 10530 N/A N/A VOP-0754 1354 1354 10332 9393 N/A N/A VOP-0755 1351 1351 10332 9393 N/A N/A VOP-0759 1351 1351 10332 9393 N/A N/A VOP-0760 1711 1711 11583 10530 N/A N/A VOP-0798 1711 1711 11583 10530 N/A N/A VOP-3007 1245 1245 10221 9292 N/A N/A VOP-3009 1245 1245 10221 9292 N/A N/A VOP-3011 1245 1245 10221 9292 N/A N/A VOP-3013 1245 1245 10221 9292 N/A N/A VOP-3041 1885 1885 57305 52095 N/A N/A VOP-3045 1885 1885 57305 52095 N/A N/A VOP-3049 1885 1885 57305 52095 N/A N/A VOP-3052 1885 1885 57305 52095 N//J.. N/A VOP-3062 1245 1245 10221 9292 N/A N/A VOP-3064 1245 1245 10221 9292 N/A N/A .

VOP-3066 1245 1245 11000 9292 N/A N/A VOP-3068 1245 1245 10221 9292 N/A N/A VOP-3080 1238 1238 18000 14045 18000 14045 VOP-3081 1239 1239 15450 14045 15450 14045 VOP-3082 1235 1235 24000 22000 24000 22000 VOP-3083 1235 1235 24000 22000 24000 22000 NOTES:

A - Differential Pressure Is Reported In (PSI)

B - Thrust Is Reported In (LBS)

  • MI0687-2096D-MA05

TABLE 2 RESULTS OF AS FOUND TESTING OF THE 85-03 VALVES/OPERATORS VALVE AS FOUND CLOSE AS FOUND OPEN TAG CLOSING THRUST TQ. OPENING THRUST TQ.

NO. CST TOTAL SW. CRACK CST SW.

============= ---------- ---------- --------- ============ ------- ---------

~----

VOP-0743 9720 11480. 2.5 4572 N/A 2.5 VOP-0748 10108 11356 2.0 4608 N/A 2.0 VOP-0753 11596 12278 2.5 4667 N/A 2.5 VOP-0754 6360 *8640 2.0 3710 N/A 2.125 VOP-0755 8509 11443 2.5 5513 N/A 2.5 VOP-0759 12311 13106 2.5 5020 N/A 2.5 VOP-0760 7780 9990 2.5 5930 N/A 2.5 VOP-0798 9893 13119 2.5 6572 N/A 2.5 VOP-3007 10528 12449 1.0 (2) 10203 1.0 VOP-3009 (2) (2) 1. 5 (2) N/A N/A VOP-3011 10115 10321 1.25 6916 N/A 1. 75 VOP-3013 7324 7824 3.0 3756 N/A 3.5 VOP-3041 45256 48631 1.0 37800 N/A N/A VOP-3045 43000 45750 1.0 < 40000 N/A 1.0 VOP-3049 53250 60843 1.0 < 47500 N/A N/A VOP-3052 52740 53000 2.0 < 27650 N/A N/A VOP-3062 15830 16780 1.5 1000 N/A 2.0 VOP-3064 ( 2) (2) 1. 5 (2) N/A 1.5 VOP-3066 17372 18653 2.5 10194 N/A LO VOP-3068 26085 26296 2.0 13360 N/A 2.0

  • VOP-3080 15640 18268 2.0 12054 17310 2.0 VOP-3081 19531 23508 2.0 15909 23508 2.0 VOP-3082(1) 13329 17212 2.0 8620 12514 2.0 VOP-3083 (1) 9320 13297 )2.0 6720 10412 )2.0 NOTES:
1. These Operators Experience Torque Only. The Valves Are Designated With An Internal Stem Nut Which Transmits Thrust To The Valve. Actual Operator Torque Is With~n The Operators Torque Rati~g. *
2. These Values Were Obtained Using B&W's Spring Pack Calibration Data.

Due to actuator orientation problems MOVTAs equipment could not be utilized.

3. As Found Cracking (Unseating) Thrust Values Preceeded By Less Than Symbols 11 <11 , Indicated That The Unseating Load Is Less Than The Spring Pack Preload.
4. Closing Thrust Values For VOP-3062, 3066, & 3068 Exceeded Both The Operator And Valve Allowables.
5. CST ~ Thrust at the control switch trip .
  • MI0687-2096D-MA05

TABLE 3 AS LEFT CLOSING THRUST RESULTS

  • OPERATOR TAG NUMBER VOP-0743 CLOSING THRUST TARGET MAX 11583 MIN 10530 CLOSING THRUST CST 10903 AS LEFT TOTAL 12383 CLOSE TQ. SW.

SETTING

=============== ======== ========== ========= ----------- ----------

2.0 VOP-0748 10332 9393 10330 11260 3.0 VOP-0753 11583 10530 11059 12559 1. 75 VOP-0754 10332 9393 9640 10640 < 3.0

.VOP-0755 10332 9393 9430 10232 3.0 VOP-0759 10332 9393 9550 10738 2.75 VOP-0760 11583 10530 11248 12481 2.75 VOP-0798 11583 10530 11120 12070 2.25 VOP-3007 10221 9292 10172 12393 < 2.5 VOP-3009 10221 9292 10216 12695 < 2.25 VOP-3011 10221 9292 9294 11439 <-2.5 VOP-3013 10221 9292 9606 11622 < 2.5 VOP-3041 57305 52095 52124 55432 1.5 VOP-3045 57305 52095 54131 57357 1.5 VOP-3049 57305 52095 54828 59337 1.25 VOP-3052 57305 52095 52124 53205 1. 75 VOP-3062 10221. 9292 9342 10928 2.75 VOP-3064 10221 9292 10200 13041 > 2.75 VOP-3066 11000 9292 10778 12492 1.0 VOP-3068 10221 9292 9725 10948 1. 75 VOP-3080 18000 14045 16119 18387 1.75 VOP-3081 15450 14045 14050 16080 2.0 VOP-3082(4) 24000 22000 24000 26340 1.5 VOP-3083(4) 24000 22000 23387 24666 I 2.25 NOTES:

1. CST = THRUST AT THE CONTROL SWITCH TRIP &

TOTAL = CST THRUST + INERTIA

2. AS LEFT TORQUE SWITCH SETTINGS PRECEDED BY "<" or ">"

SYMBOLS, INDICATED THAT THE ACTUAL SETTING IS EITHER A LITTLE HIGHER OR LOWER THAN THE REPORTED VALUE

3. THE TOTAL THRUST ON VOP-3007, 3009, 3064 &3066 EXCEEDS THE VALVE MFG. 1 S RATING. HOWEVER DIAGNOSTIC TESTING SHOWED NO EVIDENCE OF VALVE DAMAGE. IT IS BELIEVED THAT THE VENDORS 12000# DISC LIMIT IS CONSERVATIVE. .
4. THESE OPERATORS EXPERIENCE TORQUE ONLY. THE VALVES ARE DESIGNED WITH AN INTERNAL STEM NUT WHICH TRANSMITS THRUST TO THE VALVE. ACTUAL OPERATOR TORQUE IS WITHIN THE OPERATORS TORQUE RATING.

MI0687-2096D-MA05

TABLE 4 AS LEFT OPENING THRUST RESULTS

  • OPERATOR TAG NUMBER OPEN THRUST TARGET MAX MIN OPEN ING THRUST AS LEFT UNSEATING CST OPEN TQ. SW.

SETTING

=====================================================

VOP-0743 VOP-0748 N/A N/A N/A N/A

< 6460 5114 N/A N/A

1. 75 2.0 VOP-0753 N/A N/A 7531 N/A 2.25 VOP-0754 N/A N/A 5900 N/A < 3.0 VOP-0755 N/A N/A 5072 N/A 3.0 VOP-0759 N/A N/A 4788 N/A 2.75 VOP-0760 N/A N/A 7196 N/A 2.75 VOP-0798 N/A N/A 7313 N/A 2.0 VOP-3007 N/A N/A 6545 N/A 2.5 VOP-3009 N/A N/A 6559 N/A 2.25 VOP-3011 N/A N/A 5848 N/A < 2.5 VOP-3013 N/A N/A 6145 N/A 2.25 VOP-3041 N/A N/A <PL 39600 N/A 1. 75 VOP-3045 N/A N/A <PL 37200 N/A 2.0 VOP-3049 N/A N/A <PL 43400 N/A 2.0 VOP-3052 N/A N/A * <PL 39000 N/A 2.0 VOP-3062 N/A N/A 6846 N/A 2.75 VOP-3064 N/A N/A 7108 N/A > 2.75 VOP-3066 N/A N/A 7452 N/A 1.5 VOP-3068 N/A N/A 6310 N/A 1. 75 VOP-3080 18000 14045 10120 16395 1. 75
  • VOP-3081 VOP-3082(4)

VOP-3083(4) 15450 24000 24000 14045 22000 22000 9760 18053 14260 15110 22860 24010 2.0

1. 75 2.25

~-------------------------

NOTES:

1 CST= THRUST.AT THE CONTROL SWITCH TRIP &

TOTAL = CST THRUST + INERTIA 2 AS LEFT UNSEATING THRUST VALUES PRECEEDED BY 11 <11 , INDICATES THAT THE UNSEATING THRUST WAS LESS THAN THE SPRING PACK PRELOAD.

3 AS LEFT TORQUE SWITCH SETTINGS PRECEEDED BY 11 <11 OR 11 ) 11 SYMBOLS, INDICATE THAT THE ACTUAL SETTING IS EITHER A LITTLE LOWER OR HIGHER THAN THE REPORTED SETTING.

4 THESE OPERATORS EXPERIENCE TORQUE ONLY. THE VALVES ARE DESIGNED WITH AN INTERNAL STEM NUT WHICH TRANSMITS THRUST TO THE VALVE. ACTUAL OPERATOR TORQUE IS WITHIN THE OPERATORS TORQUE RATING .

  • MI0687-2096D-MA05

TABLE 5 RESULTS OF D1FFERENTIAL PRESSURE TESTING

    • CLOS ING ONLY **
  • VALVE TAG NO.

M0-0743 M0-0748 MAXIMUM DELTA-P DESIGN 1714 1354 ACTUAL DELTA-P TESTED 1239 THRUST MEASURED TEST DP 7600 5940 THRUST REQ. @

MAX DP THRUST AT CST MARGIN (CST-DP)

RUNNING LOAD THRUST

=========================================================~==============

1524 7742 6454 10580 10120 2838(8) 3666

<PL 6460 400 M0-0753 ** 1714 1524 10700 11211 10700 -511(8) <PL 6600 M0-0754 ** 1354 1249 6100 6539 9510 2971 (8) <PL 880 M0-0755 ** 1351 1249 5730 6092 9120 3028(8) <PL 1300 M0-0759 ** 1351 1244 7060 7607 9380 . 1773(8) <PL 700 M0-0760 ** 1711 1526 8940 9386 11240 1854(8) <PL 5260 M0-0798 ** 1711 1527 8680' 9015 11080 2065(8) <PL 5900 M0-3007 1245 NOTE 3 M0-3009 1245 NOTE 3 M0-3011 1245 NOTE 3 M0-3013 1245 NOTE 3 M0-3041 1885 NOTE 2 M0-3045 1885 NOTE 2 M0-3049 1885 NOTE 2 M0-3052 1885 NOTE 2 M0-3062

  • 1245 1240 M0-3064
  • 1245 1240 M0-3066
  • 1245 1240 M0-3068 ** 1245 1240 NOTE 6 M0-3080 ** 1238 1050 5220 5362 15531 10169 5285 M0-3081 1239 NOTE 4 M0-3082 ** 1235 1050 10395 11185 10395 -790 5913 M0-3083 1235 NOTE 5 NOTES 1
  • INDICATES DP TESTING &** INDICATES DP TESTING WITH MOVATS EQUIPMENT ATTACHED.

2 DP TEST COULD NOT BE PERFORMED, VALVES ARE ELECTRICALLY LOCKED OPEN.

3 DP TESTING WAS NOT PERFORMED, SINCE THE VALVES ARE IDENTICAL TO THE TESTED REDUNDANT HPSI VALVES (M0-3062, 64, 66 &68).

4 DP TESTING WAS NOT PERFORMED, SINCE THIS VALVE IS IDENTICAL TO M0-3080, WHICH WAS TESTED.

5 DP TESTING WAS- NOT PERFORMED, SINCE THIS VALVE IS IDENTICAL TO M0-3082, WHICH WAS TESTED.

6 MOVATS DATA WAS NOT OBTAINED ON THIS VALVE DUE TO AN EQUIPMENT MALFUNCTION.

7 <PL INDICATES THAT THE RUNNING LOAD IS LESS THAN THE REPORTED SPRING PACK PRELOAD .

  • 8 VALVES LISTED FOR MARGIN ARE OVERLY CONSERVATIVE SINCE PRELOAD WAS USED IN PLACE OF RUNNING LOAD TO CALCULATE MARGIN.

MI0687-2096D-MA05

TABLE 6 RESULTS OF DIFFERENTIAL PRESSURE TESTING

    • OPENING ONLY **
    • VALVE TAG NO.

MAXIMUM DELTA-P DESIGN ACTUAL DELTA-P TESTED THRUST MEASURED TEST DP THRUST REQ. @

THRUST AT MAX DP CRACKING RUNNING LOAD THRUST

=================================================================

M0-0743 ** 1714 1524 < PL < PL < PL <PL 6460 M0-0748 ** 1354 1239 4494 4865 5580 500 M0-0753 ** 1714 ' 1524 6900 6937 6900 <PL 6600 M0-0754 ** 1354 1249 4470 4772 4600 900 M0-0755 ** 1351 1249 4170 4404 4600 <PL 1300 M0-0759 ** 1351 1244 4800 5153 4960 <PL 700 M0-0760 ** 1711 1526 5820 5888 6060 <PL 5260 M0-0798 ** 1711 1527 6080 6102 6080 <PL 5900 M0-3007 1245 NOTE 3 M0-3009 1245 NOTE 3 M0-3011 1245 NOTE 3 M0-3013 1245 NOTE 3 M0-3041 1885 NOTE 2 M0-3045 1885 NOTE 2 M0-3049 1885 NOTE 2 M0-3052 1885 NOTE 2 M0-3062

  • 1245 1240 M0-3064
  • 1245 . 1240 M0-3066
  • 1245 1240 M0-3068
  • 1245 1240 NOTE 6 M0-3080 ** 1238 1050 124 -53 6211 1120 M0-3081 1239 NOTE 4 M0-3082 ** 1235 1050 10395 10963 8154 7169 M0-3083 1235 NOTE 5 NOTES 1
  • INDICATES DP TESTING &** INDICATES DP TESTING WITH MOVATS EQUIPMENT ATTACHED.. .

2 DP TEST COULD NOT BE PERFORMED, VALVES ARE ELECTRICALLY LOCKED.

3 DP TESTING WAS NOT PERFORMED, SINCE THE VALVES ARE IDENTICAL TO THE REDUNDANT HPSI VALVES (M0-3062, 64, 66 &68).

4 DP TESTING WAS NOT PERFORMED, SINCE THIS VALVE IS IDENTICAL M0-3080, WHICH WAS TESTED.

5 DP TESTING WAS NOT PERFORMED, SINCE THIS VALVE IS IDENTICAL M0-3082, WHICH WAS TESTED.

6 MOVATS DATA WAS NOT OBTAINED ON THIS VALVE DUE TO AN EQUIPMENT MALFUNCTION 7 <PL INDICATES THAT THE RUNNING LOAD IS LESS THAN THE REPORTED SPRING PACK PRELOAD.

MI0687-2096D-MA05

ATTACHMENTS A. Sy~tem Evaluations Determining Maximum Differential Pressure B. Differential Pressure Test Basis C. MOVATS - Switch Adjustment Policies And Justifications D. Palisades Methodology Document E. Palisades Long Term Operability Program OC0188-0008-NL04

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